Electric siwtch.



muil( J. T. JANETTE.

ELECTRIC SWITCH.-

PLIGATION FILED MAY 18, 1908.

= 4 SHEETS-SHEET 1.

Patented Jan.30,1912.

J., T. JANETTE. ELECTRIC SWITCHl APPLICATION FILED MAY 18, 1908.

1,01 6,071 Patented Jan. 30, 1912.

I 4 SHEETS-SHEET 2.

v@Milli l mum J. T.'JANBTTB.

ELECTRIC SWITCH.

APPLICATION FILED MAYIS, 1908.

1,01 6,071 Panmd Jan. 3o, 1912.

4 SHEETS-SHEET 3.

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J. T. JANETTE. ELECTRIC SWITCH.

APPLIGATION FILED MAY 1s. 190s.

Patented Jan. 30, 1912.

4 SHEETS-SHEET 4.

UiuTnp STATES PATENT ormoni JoIINT. JANETTE, or MILWAUKEE, WISCONSIN, .assIGNoR To THE` Connu-HAMMER.

.- MFG. Co., or MILWAUKEE, WISCONSIN, A CORPORATION or WISCONSIN.

= ELECTRIC SWITCH.

l To all whom t may concern One object-of Iny invention is to provide means which will cause the switch to close upon movement of the controller handleor other operatingl means and which will permit the switch to automatically open upon the occurrence of abnormal conditi0ns, i r'` respective of the position of the "operating means. i i Q A further object of my invention 1S to provide means which will insure the existence of normal conditions prior to the clo-l sure of the switch.

Other objects of my invention will be' hereinafter set forth.

According-to the preferred form of my invention, I connect the switch to a=member which is normally free to move independently of the'switch and I provide an electromagnet 'for causing said member, when actuated, to operate the switch.

In order to more fully disclose my invention I have shown, in the accompanying drawings, a, motor controller provided with a switch embodying one form thereof.

Of course., my invention vmay be embodied invarious other 'forms and used in other connections.

. The views in the accompanying .drawings are as follows:

'Figure 1 is a front elevation of .the con# t-rollel` with the front of vthecasing broken away to disclose the operating parts. Fig. 2

is avert-ical sectional view taken through4 the lower part of Fig, 1, looking from the lefthand side. Fi 3 is a horizontal sectional View taken on line 3 3, Fig. 1. Figs. 4 an'd '5 are enlarged horizontal views taken on `line 4 4, Fig. 1, and showing the parts in dif- 's'pcine'ati'on of Letters ement.' Application led Hay 18, 1908.

Patented Jan.3o,1912. 'serial No. 433,420.

similar to Figs. 4 and 5, but showing the parts in other positions, and for the purpose of better illustration, shows some of the'.

parts in-dot'ted lines. Figs. 7 `and 8 are ene` ferent relative positions. Fig. 6 is a View l larged detailed views of parts of the device.

. The various parts-of the controller are'inclosed within a casing 1.l Verticallymounted f within the casing, in vsuitable bearings 2 and 3, isa shaft 4 which carries a drum 5. The drum 5 carries a series of contact segments 6 which are arranged to successively engage a series of contacts y7, mounted on an insulating base 8 secured to the back ofl the'casing 1. In practice, the contacts.l 7 are connected to a resistance connected in circu'itjwith the motor arma-ture.- Mounted directly below the drum is a horizontally disposed insulating base 9 which is supported in back by an angle bar 10 carried by the base-8, and in front by rods 11. The base 9 carries two contact segments 12 and, 13 and also two Series ofcontacts 14l and 15. The drum 5 car,- ries two-brushes 16 and 17. -Thebrush 16 is adapted to move` over the contact segr'nent 13 and the series of contacts 14, While thel brush 17 is adaptedl to move over Contact' segment 12 and the series of contacts 15. In

practice, the contacts 14` and 15 are con. nected toa field resistance, while the contactsegments `12 and 13 areconnected in circuit with the field winding of the motor. A' suit,- able operating handle 18. is ke ed to the shaft 4. The termhandlef is ereinafter used to denote any operating means. As the handle 18 is moved fromlvol position the drum 5 is rotated'to first gradually remove'.

the resistance.V from 'the amature circuit and then'gra'dually insert the field resistance in 'circuit. The contact segments l12. and v13 are of sufficient length Ato insure all of the armature resistance being removed from, circuitbefore the brushes 16 and 17 pass onto the contacts 14 and 15 to insert Ieldl resistance.

I shall now describe the switch jmecha.-

nism which embodies my invention.

' All of the parts which I shall now ,describe are carried by an insulating panel 19 which is secured to the back of the-casin 1 in any suitable manner. Atits upper rigt- `hand corner the insulating panel 19 carries a bracket 20 provided withoutwardly extend-A ing arms 21 and 22, which carry a. pin 23 ried Vfor the purpose *24 is provided `with a downwardly-extending uponl which is fulcrumed a main switch 24. Switch 24 is' provided with tailjpieces' 25 adapted to engage the bracketV 20 to limit the outward movement of said switch. A

coil Spring 26, interposed between the switch' 24 and the base19, tends to force said switch into its outermost position. At its forwardend the switch 24 carries two spring arms 27 and 28.which are secured thereto'by bolts 1@ 29. The spring arm 27 carries'a contact 30 adaptedto'engage a carbon contact 31 carin a frame 32 which is bolted, or otherwise securedl tothe supporting panel 19.

'.The spring arm 28 carries 'a contact 33 15` ortion 35, which 'carries a forwardly extendn I- ing ear' 35* adapted te support an arm 37.

v The arm 37 isfulcr'umed on the switch 24 by i a pin'36. Arm 37 is provided with a forwardly and outwardly' extending'portion 38 which carries.v roller 39, and with a rear-V wardly extending portion 40 which carries a downwardly/projecting.pin 41. -The roller 39 is adapted to be engaged by an insulating I AA coil .spring complish its. purpose.

pieces 4G- tract its armaturemember. 49 so long as the' disk 42 carried rovided with a notched portion 43 in whlch the roller 39 rests when the operating handle of the Shaft 4- is in fio position.

portion' 35 of `the switch .'24 and the forwa'rd'portion ofthe arm 37, tends to lmaintain the roller 43 9 in engagement with the disk 42..' Mounted directly periphery of -the below the rear end of thearm 37 is an electromagnet 45 which is sufported by its pole and. 47,. saidpo efpieces being sev cured tov the.panel 19 by screws' pole piece 46 is. cut away toreceive one end of an armature 'memberf 49 which is fulcrumed' on a pin 5 0 carried by said. pole.

piece. The? le piece 47 is cutaway toreceive the relzxoendo 49. ',The armature member 49 is provided with'v a @longitudinally extending slot 51 in which-the pin 41, carried adapted to work. For connectingthe'switch 24 in circuitI rovide the same with a bindin ,post 529.11 the contacts 31 and 32 with inding post 53.- In practice, thema is so connected incircuit that it wil at; voltage'on the'` main li'nezis normal and will release itsv normal decrease or *failure Aof -voltage on said circuit. O f course the magnet may be connected in circuit in vvarious ways to ac' I shall now describethe operationvofmy improved circuit controlling device.

ssuming thatv the' operating handle of the controller is in its *therein will force`the rollerV 39 shown in Fig.

the form shown serving'merely by the shaft 4.` The disk 42 .contact 34 to.

44, interposed. between the.

48. v The' the armature member by the arm 37, is'

amature' member -Yupon' an' ab,

oit position, the roller 39 will rest in the notched port-ion of the disk 42, as shown 1n Fig. 6. If now the .disk 42 be rotated, before the `magnet 45 is energized, the'inclined edge of the notch 43 inwardly, butt-his movement of theroller will only cause the arm 37- to rock onits fulcrum 36, throwing the armature 49 outwardly, as 4. Thisv movement of the arm- 37 imparts practically nomovement to the'switchv24, and it wh-therefore, be apparent that, .until the magnet 45 attracts its armature, it 'will be impossible to close the switch 24. `This arrangement protects the motor -against damage in case the controller is carelessly operated'. .Assuming now that the magnet 45 is energized and'attracts 'its 'armature l49, as shown .in'Fig 6, the rear end of the arm 37 will be locked against lateral movement by the lpin -41 carried thereby, which litsin the slot 51 in said a1'- mature. Hence, as the'roller 39 vis'. moved inwardly by the disk 42, it willmove the entire arm 37 inwardly, and inasmuch as said arm is pivoted to the switch 24, it will also move said switch inwardly. When the disk 42 is rotated so far that the roller 3 9engages its outer periphery the main switch will be closed, asgs'hown-in. Fig. 5. In practice, the

lspring arms 27 and-28 are so arranged that.

the contact 30 willjengagethe carbon contact 31 before the Contact /33 engages the diminish the arc formed upon theclosure ofthe switch 24. .Under ordinar circumstances,

the shaft4 and will only be opened when the shaft4 has tion, whereuponv the roller `39 will again enter the notch 43 in the disk- 42 and then the main switch will be forcedopen by the spring 26. If, however, the voltage on the main ineffails at any time after the closure of the switch 24, the. magnet 45 willbe deenergized and release the free end'of the armature member,'therebyf releasing the rear I' end of theiarm 37. The spring 26 will then force the'main switch '24 open withoutl opposition.` As' the main switch 24 movesoutwardly the arm 37 turns on its pivot 36 and throws the armature member 49 outwardly into the position shown in Fi 4. The motor circuit is thus opened an cannot again be closeduntil the. controller is'moved to oft. position, when the roller 39 will enter the notch 43 in the disk 42. As' the roller y39 entersv the notch in the disk 42 the'forward end of the arm 37 -m'oves outwardly] under the pressure of the spring 44, while its rear end moves'inwardly, and -through the medium of the pi'n 41. moves the armature member 49 intoposition. to be again at. tracted to the pole ieee conditions are restore the switch 24 will be' .hel closed duringthe continued rotation of 47 when g normal As previously stated, after the main switch has been opened it will be impossible to again close the same without first moving the controller to ott position. The foregoing is obvious, for, in order to again close the switch without returning the controller to starting position, the magnet 45 would have to attract its armature member against the opposition of the spring 26, which it is unable to do, even though normal voltage is immediately restored to the line.

Having thus described my invention, what I'claim as new and desire to secure by Letters Patent is:

il. In combination, a switch, a member connected to said switch and movable independently thereof, and an electromagnet adapted to cause said member, when moved,

to actuate said switch, said. member being etfective to operate said switch only W ile said electromagnet is energized.

2. In combination, a switch tending to stand in open position, a member connected to said switch and movable independently.

thereof, an electromagnet adapted to cause said member, when moved, to 'close said switch; said member,when released by said magnet, being adapted to release said switch.

3. In combination, a switch, an operating member therefor adapted to turn upon either of two pivots, said member being ar# -ranged to normally/,turn upon one pivot,

and an electromagnet adapted, when energized, to necessitate said member being turned upon the other pivot.

4. In combination, a switch, an operating member therefor having two pivots, said member being arranged to normally turn upon one pivot independently of said switch, and an electromagnet adapted, when energized, to necessitate said member being turned upon the other pivot to actuate said switch.

5. In combination, a switch `tending'to return to initial position, an operating member therefor `having two pivots, said member being arranged to normally turn upon one pivot independently of Said switch, an electromagnet adapted, when energized, to necessitate said member being turned'upon the other pivot to actuate said switch, said switch being adapted to be released upon denergization of said magnet.

. 6. In combination, ay switch, an arm piv oted to said switch,l an electromagnet adapt ed to attract the end of said arm to cause said arm, when actuated, to close said switch, and means for opening said switch when saidarm is released by said magnet.

'7. In combination, a switch tending to stand in open position, a lever connected to said switch,a low-voltage magnet, said lever being fulcrumed tothe armature ofsaid magnet, said magnet being adapted to at tract its armature to cause said lever, when moved, to close said switch, said switch being adapted to automatically open when said magnet releases its armature. A

8. In combina-tion, a pivoted switch, a member pivoted intermediate of it-s ends to said switch, a low-voltage magnet having a pivoted armature, a pin carried at one end of said member adapted to work in a slot in said armature,- said armature, when attracted by said magnet, being adapted to cause.said member and said switch to move together, and means for opening said switch, irrespective of the position of said member, when saidarmature is released by said magnet.

9. The combination with a controller having an operating member, of a main line switch, a member connected to said switch and movable independently thereof, said member being adapted to be actuated by said operating member, and an electromagnet adapted to cause said member, when actuated, to close said main switch.

l0. The combination vwith a controller having an operating member, of ay main line switch tending to stand in open position, an arm connected to said switch and movable independent-ly thereof, said arm being adapted to be actuated by said operating member, and an electromagnet having an armature member connected to said arm, said magnet being adapted to attract said armature to cause said arm, when actuated, to .close said switch, said switch being adapted to open, irrespective of the position of said operatin member, when said armature is released y said magnet.

11.V The combination with a controller having an operating member, of ay main line switch, an arm pivoted intermediate of its ends to said switch and adapted to be actuated by said opera-ting member, an electromagnet having an armature connected to one end of said arm, said armature, when attracted bysaid magnet, being adapted to `cause said arm, when actuated, to close said switch, and means for opening said switch, irrespective of the position o 'said operating member, when said armature is released by said magnet.v y 12. The combination with a controller having an operating. member, of a main line switch tending to stand in. open position, a lever connected to said switch and adapted to be actuated by said operating member, a low-voltage magnet n having an armature, said lever being fulcrumed on said ,arma ture, said armature, when attracted by said magnet, being adapted to cause said arm, when actuated, to closeA said switch, and when released by said magnet to permit said switch to open, irrespective of the position ofvsaid operating member.

13. The combination with a controller having an operating shaft, of a pivoted main line switch, an arm pivoted intermediate of its ends to said switch,`a cam carried by said shaft adapted to engage one'- a low-voltage magnet having a pivoted armature, a pin carried at the opposite end of said arn'i adapted to Work in a slot in said pivoted armature, said armature, when attracted by said magnet, being adapted to cause said "arm, when actuated by .said cam, to close said switch, and means for opening said switch, irre spective of the position of said cam, when said armature is released by said magnet.

14:.l The combination with the operating end of said arm,

4element of a controller, of a main line switch, an operating melnberconnected to said switch and movable independently thereof, said member'being arranged to bei actuated by said element, an electromagnet adapted to cause said member, when moved by said element, to close said switch,

and means4 for automatically opening said switch upon denergzation of said magnet,

vand maintaining said-switch in open posi tion until said element is returned to initial position.

15. element of a controller,- of a main line switch arranged tol be actuated by said element, said switch being `arranged to turn upon either of two pivots and arranged to nor' mally lturn upon onepivot, .and an .electromagnetadapted, when energized, to necessitate said switch vbeing turned upon the other pivot, and means for opening said switch upon denergization of said magnet, and maintaining said switch in open posi- .tion until said member and said element are returned to initial position.k

In witness whereof, I have hereunto sub; scribed my name in thepresenceof two witnesses.

JOHN T..y JANETTE. Witnesses: ,r

OSCAR A. KELLER, A. H. BARNIOKE.

The combination with the operating 

